:root {
  --ink: #121514;
  --muted: #606763;
  --paper: #f4f3ed;
  --surface: #ebeae3;
  --line: #d3d4cc;
  --accent: #9eff6e;
  --accent-dark: #63b83d;
  --white: #ffffff;
  --mono: "DM Mono", monospace;
  --sans: "Manrope", sans-serif;
  --max-width: 1240px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 73% 13%, rgba(158, 255, 110, 0.16), transparent 26rem),
    var(--paper);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 1rem;
  left: 1rem;
  padding: 0.75rem 1rem;
  background: var(--accent);
  transform: translateY(-200%);
}

.skip-link:focus {
  transform: translateY(0);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.site-header,
.hero,
.section,
footer {
  width: min(calc(100% - 3rem), var(--max-width));
  margin-inline: auto;
}

.site-header {
  position: relative;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 92px;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  text-decoration: none;
  letter-spacing: -0.03em;
}

.brand-mark {
  display: grid;
  width: 2.25rem;
  aspect-ratio: 1;
  place-items: center;
  border-radius: 50%;
  color: var(--ink);
  background: var(--accent);
  font: 500 0.72rem var(--mono);
  letter-spacing: -0.04em;
}

.menu {
  display: flex;
  gap: 2rem;
}

.menu a {
  position: relative;
  color: #3c423f;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
}

.menu a::after {
  position: absolute;
  right: 0;
  bottom: -0.4rem;
  left: 0;
  height: 2px;
  background: var(--ink);
  content: "";
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 180ms ease;
}

.menu a:hover::after,
.menu a:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

.menu-toggle {
  display: none;
}

.hero {
  display: grid;
  min-height: 720px;
  padding: clamp(5rem, 10vw, 8.5rem) 0;
  grid-template-columns: minmax(0, 1.18fr) minmax(340px, 0.82fr);
  align-items: center;
  gap: clamp(3rem, 7vw, 7rem);
}

.section-label {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin: 0 0 1.8rem;
  font: 500 0.78rem var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 850px;
  margin-bottom: 2rem;
  font-size: clamp(3.3rem, 6.9vw, 6.75rem);
  line-height: 0.96;
  letter-spacing: -0.075em;
}

h1 span {
  color: var(--muted);
  font-weight: 500;
}

.hero-intro {
  max-width: 690px;
  margin-bottom: 2.4rem;
  color: var(--muted);
  font-size: clamp(1rem, 1.8vw, 1.2rem);
  line-height: 1.75;
}

.hero-intro strong {
  color: var(--ink);
  font-weight: 600;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.button {
  display: inline-flex;
  min-height: 54px;
  padding: 0 1.35rem;
  align-items: center;
  justify-content: center;
  gap: 0.8rem;
  border: 1px solid var(--ink);
  font-size: 0.9rem;
  font-weight: 700;
  text-decoration: none;
  transition: transform 180ms ease, background-color 180ms ease, color 180ms ease;
}

.button svg,
.contact-links svg {
  width: 1.1rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-3px);
}

.button-primary {
  background: var(--ink);
  color: var(--white);
}

.button-primary:hover,
.button-primary:focus-visible {
  background: #2a2f2c;
}

.button-secondary:hover,
.button-secondary:focus-visible {
  background: var(--white);
}

.code-card {
  overflow: hidden;
  color: #d8ddd9;
  background: #111412;
  border: 1px solid #2a2e2c;
  box-shadow: 28px 28px 0 var(--accent);
  transform: rotate(1.5deg);
}

.code-card-top {
  display: flex;
  height: 52px;
  padding: 0 1rem;
  align-items: center;
  gap: 0.45rem;
  border-bottom: 1px solid #2c302e;
}

.code-card-top > span {
  width: 0.65rem;
  height: 0.65rem;
  border-radius: 50%;
  background: #3e4440;
}

.code-card-top > span:first-child {
  background: var(--accent);
}

.code-card-top p {
  margin: 0 0 0 0.7rem;
  color: #858b87;
  font: 400 0.7rem var(--mono);
}

.code-body {
  min-height: 380px;
  padding: 2.25rem 1.3rem;
  font: 400 clamp(0.7rem, 1.15vw, 0.88rem)/2.1 var(--mono);
}

.code-body p {
  margin: 0;
  white-space: nowrap;
}

.code-body i {
  display: inline-block;
  width: 2.25rem;
  color: #464c48;
  font-style: normal;
  user-select: none;
}

.code-key,
.code-boolean {
  color: #9eff6e;
}

.code-string {
  color: #ecc58c;
}

.cursor {
  display: inline-block;
  width: 0.5rem;
  height: 1rem;
  vertical-align: middle;
  background: var(--accent);
  animation: blink 1s steps(1) infinite;
}

.code-card-footer {
  display: flex;
  padding: 0.65rem 1rem;
  justify-content: flex-end;
  gap: 1.2rem;
  color: #1a201c;
  background: var(--accent);
  font: 500 0.65rem var(--mono);
}

@keyframes blink {
  50% { opacity: 0; }
}

.section {
  padding: clamp(6rem, 11vw, 10rem) 0;
  border-top: 1px solid var(--line);
}

.section-label span {
  color: var(--muted);
}

.about {
  display: grid;
  grid-template-columns: 0.35fr 1.65fr;
  gap: 3rem;
}

.about-content {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: clamp(3rem, 7vw, 7rem);
}

.about h2,
.section-heading h2,
.contact h2 {
  margin-bottom: 0;
  font-size: clamp(2.45rem, 5vw, 4.8rem);
  line-height: 1.08;
  letter-spacing: -0.06em;
}

.about-text {
  padding-top: 0.6rem;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.8;
}

.about-text p + p {
  margin-top: 1.3rem;
}

.section-heading {
  display: flex;
  margin-bottom: 4rem;
  align-items: flex-end;
  justify-content: space-between;
}

.section-heading .section-label {
  margin-bottom: 0.7rem;
}

.expertise-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.expertise-card {
  position: relative;
  min-height: 390px;
  padding: clamp(1.6rem, 3vw, 2.6rem);
  background: var(--paper);
  transition: background-color 220ms ease, transform 220ms ease;
}

.expertise-card:hover {
  z-index: 1;
  background: var(--white);
  transform: translateY(-8px);
  box-shadow: 0 16px 40px rgba(20, 25, 22, 0.08);
}

.card-number {
  position: absolute;
  top: 1.4rem;
  right: 1.4rem;
  color: var(--muted);
  font: 400 0.7rem var(--mono);
}

.card-icon {
  display: grid;
  width: 3.8rem;
  height: 3.8rem;
  margin-bottom: 5rem;
  place-items: center;
  border-radius: 50%;
  color: var(--ink);
  background: var(--accent);
}

.card-icon svg {
  width: 1.55rem;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.5;
}

.expertise-card h3 {
  margin-bottom: 1.1rem;
  font-size: 1.35rem;
  letter-spacing: -0.035em;
}

.expertise-card p {
  max-width: 29ch;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

.contact {
  display: grid;
  width: 100%;
  max-width: none;
  padding-inline: max(1.5rem, calc((100vw - var(--max-width)) / 2));
  grid-template-columns: 0.95fr 1.05fr;
  gap: clamp(4rem, 10vw, 10rem);
  color: var(--white);
  background: var(--ink);
  border-top: 0;
}

.section-label-light {
  color: var(--accent);
}

.section-label-light span {
  color: #878d89;
}

.contact-copy p {
  max-width: 520px;
  margin: 2rem 0 0;
  color: #aeb4b0;
  line-height: 1.75;
}

.contact-links {
  border-top: 1px solid #393d3a;
}

.contact-links a {
  display: grid;
  min-height: 112px;
  padding: 1.5rem 0;
  grid-template-columns: 0.35fr 1fr auto;
  align-items: center;
  gap: 1.5rem;
  border-bottom: 1px solid #393d3a;
  text-decoration: none;
  transition: padding 180ms ease, color 180ms ease;
}

.contact-links a:hover,
.contact-links a:focus-visible {
  padding-left: 1rem;
  color: var(--accent);
}

.contact-links span {
  color: #8c938f;
  font: 400 0.72rem var(--mono);
  text-transform: uppercase;
}

.contact-links strong {
  font-size: clamp(0.9rem, 1.55vw, 1.05rem);
  font-weight: 500;
}

footer {
  display: grid;
  min-height: 130px;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 2rem;
  color: var(--muted);
  font: 400 0.72rem var(--mono);
}

.footer-brand {
  color: var(--ink);
  font-family: var(--sans);
}

footer p {
  margin: 0;
}

footer p:last-child {
  text-align: right;
}

.js .reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 700ms ease, transform 700ms cubic-bezier(0.22, 1, 0.36, 1);
}

.js .reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

:focus-visible {
  outline: 3px solid var(--accent-dark);
  outline-offset: 4px;
}

@media (max-width: 920px) {
  .hero {
    min-height: auto;
    grid-template-columns: 1fr;
  }

  .hero-copy {
    max-width: 760px;
  }

  .code-card {
    width: min(100%, 580px);
  }

  .about,
  .about-content {
    grid-template-columns: 1fr;
  }

  .about-content {
    gap: 2.5rem;
  }

  .expertise-grid {
    grid-template-columns: 1fr;
  }

  .expertise-card {
    min-height: auto;
  }

  .card-icon {
    margin-bottom: 3rem;
  }

  .contact {
    grid-template-columns: 1fr;
  }

  footer {
    grid-template-columns: 1fr 1fr;
  }

  footer > p:nth-child(2) {
    display: none;
  }
}

@media (max-width: 640px) {
  .site-header,
  .hero,
  .section,
  footer {
    width: min(calc(100% - 2rem), var(--max-width));
  }

  .site-header {
    min-height: 76px;
    flex-wrap: wrap;
  }

  .brand-name {
    font-size: 0.9rem;
  }

  .js .menu-toggle {
    display: grid;
    width: 44px;
    height: 44px;
    padding: 12px;
    place-content: center;
    gap: 6px;
    border: 0;
    background: transparent;
  }

  .menu {
    width: 100%;
    padding-bottom: 1rem;
    justify-content: space-between;
    gap: 1rem;
  }

  .js .site-header {
    flex-wrap: nowrap;
  }

  .menu-toggle span:not(.sr-only) {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--ink);
    transition: transform 180ms ease;
  }

  .menu-toggle[aria-expanded="true"] span:nth-child(2) {
    transform: translateY(4px) rotate(45deg);
  }

  .menu-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-4px) rotate(-45deg);
  }

  .js .menu {
    position: absolute;
    top: 75px;
    right: 0;
    left: 0;
    display: none;
    padding: 1.25rem;
    flex-direction: column;
    gap: 1.25rem;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 16px 30px rgba(20, 25, 22, 0.08);
  }

  .js .menu.is-open {
    display: flex;
  }

  .hero {
    padding-block: 5rem 6rem;
  }

  h1 {
    font-size: clamp(3rem, 15vw, 4.6rem);
  }

  .hero-actions {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .code-card {
    box-shadow: 12px 12px 0 var(--accent);
    transform: none;
  }

  .code-body {
    min-height: 340px;
    padding-inline: 0.8rem;
    font-size: 0.63rem;
  }

  .section-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 1.5rem;
  }

  .contact {
    width: 100%;
    padding-inline: 1rem;
  }

  .contact-links a {
    grid-template-columns: 1fr auto;
    gap: 0.5rem 1rem;
  }

  .contact-links span {
    grid-column: 1 / -1;
  }

  .contact-links strong {
    overflow-wrap: anywhere;
  }

  footer {
    min-height: 150px;
  }

  footer .brand-name {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .js .reveal {
    opacity: 1;
    transform: none;
  }
}